O is the center of the circle in the diagram.
What is its perimeter?
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O is the center of the circle in the diagram.
What is its perimeter?
To solve this problem, we will determine the circumference of the circle:
Therefore, the circumference of the circle is cm. This aligns with choice 3 from the provided options.
The correct and verified circumference is cm.
cm
O is the center of the circle in the diagram.
What is its perimeter?
For circles, perimeter and circumference mean the same thing - the distance around the outside edge. Other shapes use 'perimeter' but circles specifically use 'circumference'.
π (pi) represents the relationship between a circle's circumference and diameter. It's approximately 3.14, but we often leave answers in terms of π for exact values.
Keep your answer as unless the problem asks for a decimal approximation. The exact form is usually preferred in mathematics.
Look at the diagram carefully! The radius goes from center to edge, while diameter goes completely across through the center. In this problem, the line from O to the edge shows radius = 4.
If you used C = πd (where d = diameter), you'd get C = 4π, which is half the correct answer. Remember: diameter = 2 × radius, so d = 8 when r = 4.
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